it's coming from all places, israel. cnn's sarah sidner has the story. >> reporter: every morning this 80-year-old gets his medicine, stuffs it in his pipe and smokes it. he is using medical marijuana. also known as cannabis. how does the cannabis make you feel? >> good. >> reporter: he is a holocaust survivor and author and painter whose hands shake so much he couldn't work anymore. my hands are now steady. i can hold things like tea, he says. the cannabis also makes him high because of the psychoactive effects of the substance thc in the plant. for those who use medical marijuana, the high they experience is the price for the reported help it gives to cancer patients on chemotherapy or others suffering from everything from parkinson's disease to pain. rifka thought marijuana just got people high until she was prescribed a new strain of the plant and tried it. two spoonfuls a day with her other medications. her pain that left her wheelchair bound began to leave her relieved without feeling lethargic. outstanding. i was